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Maybe one does not consider this as a shadow…
One can see on this image that the opaque objects generate a grey shadow (not colored), then we can consider that a shadow is the absence of light…
But then what about the partly colored "shadow"generated by semi transparent objects (such as a colored glass) is it a shadow or a projection?
Physic laws may certainly explain that, but what about your own feeling?

Antonio, today I came across our Aussie version of the crab, the soldier crab. They don't make art, just a sloppy mess of sand balls, so bad I couldn't find a single example to photograph.
The crabs themselves, beautiful. I spent a good hour getting to know them.

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it is a little more complex. Families with kids can go anywhere except places indicate a minimum age for various reasons.
For viewing the website of the brewery the same minimum age as for drinking beer is demanded - 16 years.